Rear SuperSprings 1,040kg by SuperSprings International Illustration Vectorielle De Licne De Ligne De Cerise Coupe Vecteurs. SuperSprings are a simple, bolt on, steel helper spring that eliminates rear end sag and stabilizes sway & body roll. Built from high grade shot peened steel, this suspension solution allows you to load up without sacrificing your ride quality. The SuperSpring includes a patented roller shackle on each end that allows for self adjustment as weight is changed. This is particularly helpful as you add water, tools or heavy gear to your vehicle. The SSA23 has an additional load leveling capacity of 2,300 lb.